Level II Challenges (155)
All challenges in
Level II, ordered by date posted (the most recent appear first).
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Handycipher is a newly designed cipher to permit pen-and-paper encrypting and decrypting, while providing a significantly high level of security. From the 1142-character plaintext 229 characters somewhere in it are known. Read more...
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Author:
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Published on: 2015-03-03 23:34 |
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Maximum number of attempts for this challenge: 15 |
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All successful users of this challenge
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User (#7) |
Achieved points (Global score) |
y-m-d - h:m:s |
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Alain (Integral)
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1232 (207924) |
2015-06-09 23:28:30 |
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Michael Möller (michaelm)
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1187 (253046) |
2015-09-20 13:16:49 |
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Em Doulgerakis (Greko)
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1140 (145541) |
2016-09-06 10:35:51 |
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George Lasry (george4096)
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1125 (372955) |
2017-05-27 01:48:16 |
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#5 |
Nicolas (nicosPavlov)
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1116 (257791) |
2018-01-30 02:15:53 |
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#6 |
D3d4lu5 (D3d4lu5)
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1109 (363488) |
2018-11-01 19:59:30 |
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#7 |
Random Dude (rnd)
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1104 (98856) |
2019-07-21 17:29:33 |
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